| article html file updated | 7 February 2020 17:44 CET | Update | https://www.mdpi.com/2075-471X/5/4/42 |
| article html file updated | 4 May 2019 23:03 CEST | Update | - |
| article html file updated | 9 November 2016 10:01 CET | Original file | - |
| article xml uploaded. | 9 November 2016 10:00 CET | Original file | https://www.mdpi.com/2075-471X/5/4/42/xml |
| article pdf uploaded. | 9 November 2016 10:00 CET | Version of Record | https://www.mdpi.com/2075-471X/5/4/42/pdf |
